test for functions summary

Summary Relations and Functions - A pair of objects, written in a specified order is called an ordered pair . A pair of objects, written in a specified order is called an ordered pair . For the ordered pair (a,b), a is called the first element and b, the second element. The orde..

The presence of sulphur dioxide can be tested by reacting with acidified orange colored potassium dichromate solution when it gives green colored chromic sal..

Ammonia is produced by decay of plant and animal tissues. Nitrogenous organic matters like urea in the urine and excreta of animals get acted upon by bacteria releasing ammonia. Ammonia is manufactured by Haber's Process by the reaction of 1 volume of nitrogen gas and 3 volumes of hydrogen gas..

) AIDS victims have very few T cells and therefore a weakened immune system. 31) In AIDS since the protective immuno system is destroyed, other germs cause opportunistic diseases, using the opportunity of lowered resistance. 32) HIV infection is detected by ELISA test and confirmed by wes..

>Hydrochloric acid can be tested with silver nitrate solution where it gives white precipitate of silver chloride or with lead nitrate solution where it gives white precipitate of lead chloride. Hydrochloric acid is used in the production of dyes, drugs, paints, photographic chemicals and..

. Once the roots develop the branch is then cut off from the parent body. Grafting is the transfer of a part of one plant to the stump of another plant. The plant bears flowers and fruits characteristic of the scion. It is commonly practised on apple trees and other such plants which either do not ..

. All hydrocarbons burn in oxygen to give carbon dioxide and water. Oxygen combines with colorless nitric oxide to form reddish brown fumes of nitrogen dioxide. This serves as a test for oxygen. Rusting is the oxidation of iron in the presence of oxygen and water vapor to give the hydrate..

While the nervous system and endocrine system have their own features, they have a common method of communication. Both the systems release chemicals to communicate between cells. Together these two systems carry out a very complex process of maintaining a homeostatic (balanced) internal envi..

The abiotic environment includes the air (atmosphere), water (hydrosphere) and land (lithosphere). The biotic environment includes the plants, animals and the microbe..

All these evidences point to the fact that evolution occurs. The exact mechanism of evolution, however, is not yet conclusively proven. But constant study and research in the above fields is continuing for answers. Asexual reproduction results in identical offspring whereas sexual reproduction..